Improvement in puddling-furnaces



Fuddling Furnaces.

L. P'ENNUCK.

Patented July 14, 1874.

UNITED STATES PATENT OEEIGE.

JOSEPH L. PIJNNOOK, OF COATESVILLE, PENNSYLVANIA.

IMPROVEMENT IN PUDDLlNG-FURNACES.

Specification forming part of Letters Patent N0. 153,110, dated July 14, 1874; application tiled May 28, 1874.

To all whom tt may concern Be it known that I, J osErH L. PENNocK, of Ooatesville, Chester county, Pennsylvania, have invented certain Improvements in Furnaces, of which the following is a specification:

The object of my invention is to maintain the integrity of piuldling-furnaces for a longer time than usual, and to economize the consumption of the iron or tx.wl1ich is usually employed as a lining for puddling-furnaces5 and these objects I attain by means ot' cast iron chills, through which steam is caused to circulate, with or without air, in the manner described hereafter'.

Figure l 0f the accompanying drawing represents a vertical section of the bed of a puddling-i'urnace, and Fig. 2 a sectional plan on the line l 2, Fig. I. A is a cast-iron plate, which, as usual, supports the bed ofthe furnace, and B and B a-re two hollow cast-iron chills, extending' entirely across the bed, as shown lin Fig. 2, the chill B being situated directly behind the bridge-wall D. At opposite sides of the furnace are the usual doorways a a, toward which are directed the tapering ends of the hollow cast-iron cheeks G, the latter, although cast separately from the chills, communicating freely therewith, as shown in Fig. 2. Steampipes b communicate with the chills, so that live steam may at all times pervade the interior ot' both chills and cheeks, there being an outlet at d for the escape of the steam. I

There may be, in the end of each chill, an opening larger than the pipe I), which projects into the said chill, so that air may enter with the steam.

II represents the refractory iron ore, techA nieally termed the iix, which is banked `up against and over the top of each chill, as shown in Fig. 1. Ghills through which water is caused to circulate have frequently been used in connection with puddling-furnaces, but they are very apt to break, and, in some cases, to explode, and endanger the. lives of the attendant-s. Owing to this, their frequent removal is demanded, and this cannot be accomplished without disturbin g the integrity ot' the furnace.

I have ascertained that chills never crack under the inluence of steam, and that the refractory ore or iix H will last much longer when banked against thesteam-chills. Practical tests have proved that the steam-chills effeet a saving of this iron or X to the extent, at the lowest estimate, of two hundred pounds to the ton of iron manufactured.

I claim as my invention- The mode described of maintaining the chills of furnaces at the required temperaturethat is, by means of currents ot steam, or steam and air combined, passed through the chills, as Setforth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH L. PENNOOK.

Witnesses:

WM. A. STEEL, HARRY SMITH. 

